20409918

素因数分解:

$2^1\times 3^1\times {\mathrm{409}}^1\times {\mathrm{8317}}^1$

素因数の和:8731

約数の個数: 16

約数和(自身を含む): 40924560

約数和(自身を除く): 20514642

約数列:

[1, 2, 3, 6, 409, 818, 1227, 2454, 8317, 16634, 24951, 49902, 3401653, 6803306, 10204959, 20409918]

約数ペア:

[(1, 20409918), (2, 10204959), (3, 6803306), (6, 3401653), (409, 49902), (818, 24951), (1227, 16634), (2454, 8317)]